2021 |
Martínez, D N; de la Barrera, E Physiological screening of ruderal weed biomonitors of atmospheric nitrogen deposition Journal Article Forthcoming Botanical Sciences, 99 , Forthcoming. Abstract | BibTeX | Tags: atmospheric pollution, biomass, chlorophyll, invasive species, nitrate reductase, nitrogen, plant nutrition, stable isotopes @article{Martínez2021, title = {Physiological screening of ruderal weed biomonitors of atmospheric nitrogen deposition}, author = {D. N. Martínez and E. de la Barrera }, year = {2021}, date = {2021-04-01}, journal = {Botanical Sciences}, volume = {99}, abstract = {Background: Plants take up various species of reactive nitrogen and their different physiological responses to the increase of nitrogen availability can be useful in biomonitoring. Questions: Does atmospheric nitrogen deposition affect the physiology of ruderal weeds? Which species are most responsive to the nitrogen deposition? Studied species: Eleven ruderal weeds. Study site and dates: Morelia, Michoacán, Mexico. 2019. Methods: Under scenarios of 10, 20, 40 and 80 kg N ha-1year-1, we quantified plant responses of biomass production, nitrate reductase activity, chlorophyll content, fluorescence, δ15N, nitrogen and carbon content. Results: Total biomass production increased with the rate of nitrogen deposition for Bidens pilosa, Chloris gayana, Lepidium virginicum, and Pennisetum setaceum, as chlorophyll content in B. pilosa, C. gayana, and L. virginicum. In turn, the below- to above-ground biomass ratio decreased for B. pilosa and C. gayana, as photosynthetic efficiency in C. gayana, L. virginicum, and Chloris pycnothrix. Nitrate reductase activity was only affected in L. virginicumm, C. gayana, and T. officinale. With the exception of C. pycnothrix, the nitrogen content increased, while the carbon augmented in C. gayana, C. pycnothrix, and P. setaceum. The C/N ratio was reduced in B. pilosa, C. gayana, Chloris virgata, P. setaceum, and T. officinale. The δ15N was increased in B. pilosa, C. gayana, C. virgata and P. setaceum. Conclusions: Bidens pilosa, C. gayana, L. virginicum, and P. setaceum were the species with more affected variables to nitrogen deposition, which could be useful in the biomonitoring. }, keywords = {atmospheric pollution, biomass, chlorophyll, invasive species, nitrate reductase, nitrogen, plant nutrition, stable isotopes}, pubstate = {forthcoming}, tppubtype = {article} } Background: Plants take up various species of reactive nitrogen and their different physiological responses to the increase of nitrogen availability can be useful in biomonitoring. Questions: Does atmospheric nitrogen deposition affect the physiology of ruderal weeds? Which species are most responsive to the nitrogen deposition? Studied species: Eleven ruderal weeds. Study site and dates: Morelia, Michoacán, Mexico. 2019. Methods: Under scenarios of 10, 20, 40 and 80 kg N ha-1year-1, we quantified plant responses of biomass production, nitrate reductase activity, chlorophyll content, fluorescence, δ15N, nitrogen and carbon content. Results: Total biomass production increased with the rate of nitrogen deposition for Bidens pilosa, Chloris gayana, Lepidium virginicum, and Pennisetum setaceum, as chlorophyll content in B. pilosa, C. gayana, and L. virginicum. In turn, the below- to above-ground biomass ratio decreased for B. pilosa and C. gayana, as photosynthetic efficiency in C. gayana, L. virginicum, and Chloris pycnothrix. Nitrate reductase activity was only affected in L. virginicumm, C. gayana, and T. officinale. With the exception of C. pycnothrix, the nitrogen content increased, while the carbon augmented in C. gayana, C. pycnothrix, and P. setaceum. The C/N ratio was reduced in B. pilosa, C. gayana, Chloris virgata, P. setaceum, and T. officinale. The δ15N was increased in B. pilosa, C. gayana, C. virgata and P. setaceum. Conclusions: Bidens pilosa, C. gayana, L. virginicum, and P. setaceum were the species with more affected variables to nitrogen deposition, which could be useful in the biomonitoring. |
2020 |
Martínez, D N; de la Barrera, E Germination ecophysiology for three peri-urban ephemeral weeds Journal Article La Granja (Revista de Ciencias de la Vida), 31 , pp. 03, 2020. Abstract | Links | BibTeX | Tags: invasive species, reproductive ecophysiology, temperature, urban ecology, water relations @article{Martínez2020, title = {Germination ecophysiology for three peri-urban ephemeral weeds}, author = {D. N. Martínez and E. de la Barrera }, url = {https://lagranja.ups.edu.ec/index.php/granja/article/view/31.2020.03}, doi = {10.17163/lgr.n31.2020.03}, year = {2020}, date = {2020-02-28}, journal = {La Granja (Revista de Ciencias de la Vida)}, volume = {31}, pages = {03}, abstract = {The environmental requirements leading to germination were determined by three common species found during the June-October 2009 rainy season in a peri-urban site from Morelia, Michoacán, Mexico, where the construction of a campus of Universidad Nacional Autónoma de México (UNAM) was underway. In particular, the responses were evaluated in the laboratory to low-temperature stratification, as well as day/night air temperature, and water potential for the native Onagraceae Lopezia racemosa and Ludwigia octovalvis, and the exotic Polygonaceae Rumex crispus. Low-temperature stratification had no effect on germination by L. racemosa, for which maximum germination averaging 88% was optimal at 25/15 and 30/20 ºC. Germination at 21 d was halved at –0.5 MPa and completely inhibited at –1.0 MPa. The seeds of L. octovalvis were also insensitive to low temperature stratification and their germination never exceeded 70%, with the two highest temperatures of 30/20 and 35/25 ºC being the optimum. For this species germination was maximal at 0.0 MPa, decreasing significantly under every treatment with a minimum germination of 21% for seeds incubated at –0.1 MPa. Germination for the exotic R. crispus was delayed by low-temperature stratification, although all its seeds germinated regardless of the temperature or water potential treatment. While the environmental requirements for germination of ephemeral species often match the typical climate of their growing season, the differential responses found for the species considered in the present study provide some insight into the mechanisms leading to changes in species composition for communities from disturbed environments, including the displacement of native species and the proliferation of exotic, potentially invasive plants. }, keywords = {invasive species, reproductive ecophysiology, temperature, urban ecology, water relations}, pubstate = {published}, tppubtype = {article} } The environmental requirements leading to germination were determined by three common species found during the June-October 2009 rainy season in a peri-urban site from Morelia, Michoacán, Mexico, where the construction of a campus of Universidad Nacional Autónoma de México (UNAM) was underway. In particular, the responses were evaluated in the laboratory to low-temperature stratification, as well as day/night air temperature, and water potential for the native Onagraceae Lopezia racemosa and Ludwigia octovalvis, and the exotic Polygonaceae Rumex crispus. Low-temperature stratification had no effect on germination by L. racemosa, for which maximum germination averaging 88% was optimal at 25/15 and 30/20 ºC. Germination at 21 d was halved at –0.5 MPa and completely inhibited at –1.0 MPa. The seeds of L. octovalvis were also insensitive to low temperature stratification and their germination never exceeded 70%, with the two highest temperatures of 30/20 and 35/25 ºC being the optimum. For this species germination was maximal at 0.0 MPa, decreasing significantly under every treatment with a minimum germination of 21% for seeds incubated at –0.1 MPa. Germination for the exotic R. crispus was delayed by low-temperature stratification, although all its seeds germinated regardless of the temperature or water potential treatment. While the environmental requirements for germination of ephemeral species often match the typical climate of their growing season, the differential responses found for the species considered in the present study provide some insight into the mechanisms leading to changes in species composition for communities from disturbed environments, including the displacement of native species and the proliferation of exotic, potentially invasive plants. |
2017 |
Martínez, D N; de la Barrera, E PREPRINT: Germination ecophysiology for three peri-urban ephemeral weeds Journal Article PeerJ Preprints, 5 , pp. e2950v1, 2017, ISSN: 2167-9843, (NOT Peer reviewed. This is an early communication for feedback before peer review). Abstract | Links | BibTeX | Tags: disturbance, invasive species, land-use change, reproductive ecophysiology, seed bank, temperature, urban ecology, water relations @article{Martínez2017, title = {PREPRINT: Germination ecophysiology for three peri-urban ephemeral weeds}, author = {D. N. Martínez and E. de la Barrera}, url = {https://peerj.com/preprints/2950/}, doi = {10.7287/peerj.preprints.2950v1}, issn = { 2167-9843}, year = {2017}, date = {2017-04-27}, journal = {PeerJ Preprints}, volume = {5}, pages = {e2950v1}, abstract = {We determined the environmental requirements leading to germination by three common species found during the summer rainy season in a peri-urban site where construction of a university campus was underway. In particular, we evaluated laboratory responses to low-temperature stratification, day/night air temperature, and water potential for the native Onagraceae Lopezia racemosa and Ludwigia octovalvis, and the exotic Polygonaceae Rumex crispus. Low-temperature stratification had no effect on germination by L. racemosa, for which maximum germination averaging 88% was optimal at 25/15 and 30/20 ºC. Germination at 21 d was halved at –0.5 MPa and completely inhibited at –1.0 MPa. The seeds of L. octovalvis were also insensitive to low temperature stratification and their germination never exceeded 70%, with the two highest temperatures of 30/20 and 35/25 ºC being the optimum. For this species germination was maximal at 0.0 MPa, decreasing significantly under every treatment with a minimum germination of 21% for seeds incubated at –0.1 MPa. Germination for the exotic R. crispus was delayed by low-temperature stratification, although all of its seeds germinated regardless of the temperature or water potential treatment. While the environmental requirements for germination of ephemeral species often match the typical climate of their growing season, the differential responses found for the species considered in the present study provide some insight into the mechanisms leading to changes in species composition for communities from disturbed environments, including the displacement of native species and the proliferation of exotic, potentially invasive, plants.}, note = {NOT Peer reviewed. This is an early communication for feedback before peer review}, keywords = {disturbance, invasive species, land-use change, reproductive ecophysiology, seed bank, temperature, urban ecology, water relations}, pubstate = {published}, tppubtype = {article} } We determined the environmental requirements leading to germination by three common species found during the summer rainy season in a peri-urban site where construction of a university campus was underway. In particular, we evaluated laboratory responses to low-temperature stratification, day/night air temperature, and water potential for the native Onagraceae Lopezia racemosa and Ludwigia octovalvis, and the exotic Polygonaceae Rumex crispus. Low-temperature stratification had no effect on germination by L. racemosa, for which maximum germination averaging 88% was optimal at 25/15 and 30/20 ºC. Germination at 21 d was halved at –0.5 MPa and completely inhibited at –1.0 MPa. The seeds of L. octovalvis were also insensitive to low temperature stratification and their germination never exceeded 70%, with the two highest temperatures of 30/20 and 35/25 ºC being the optimum. For this species germination was maximal at 0.0 MPa, decreasing significantly under every treatment with a minimum germination of 21% for seeds incubated at –0.1 MPa. Germination for the exotic R. crispus was delayed by low-temperature stratification, although all of its seeds germinated regardless of the temperature or water potential treatment. While the environmental requirements for germination of ephemeral species often match the typical climate of their growing season, the differential responses found for the species considered in the present study provide some insight into the mechanisms leading to changes in species composition for communities from disturbed environments, including the displacement of native species and the proliferation of exotic, potentially invasive, plants. |
2016 |
Villa-Reyes, F; de la Barrera, E Environmental cues for germination of the invasive bunch grass Pennisetum ciliare (L.) Link Journal Article Acta Physiologiae Plantarum, 38 , pp. 156, 2016. Abstract | Links | BibTeX | Tags: buffel grass, Cenchrus ciliaris, ecophysiology, germination, global change, invasive species, Pennisetum ciliare, zacate buffel @article{Villa-Reyes2016, title = {Environmental cues for germination of the invasive bunch grass Pennisetum ciliare (L.) Link}, author = {F. Villa-Reyes and E. de la Barrera}, url = {http://rdcu.be/noeu http://link.springer.com/article/10.1007/s11738-016-2175-x}, doi = {10.1007/s11738-016-2175-x}, year = {2016}, date = {2016-05-28}, journal = {Acta Physiologiae Plantarum}, volume = {38}, pages = {156}, abstract = {Responses of seed germination to air temperature, water potential, light, and smoke were studied in the laboratory for seeds of the invasive bunch grass Pennisetum ciliare (L.) Link (syn. Cenchrus ciliare L.; buffel grass). First introduced to North America during the mid-20th Century for establishing pastures, this African bunch grass has become an invasive species of concern. Across all the experiments conducted, a low germination was observed for P. ciliare fascicles that never exceeded 30% at 21 days after sowing. Optimal day/night air temperatures for germination, controlled with an environmental chamber, were 25/15 and 30/20 ºC, while extreme temperatures of 15/5 and 45/35 ºC inhibited germination. By sowing seeds of P. ciliare under different water potentials, created with aqueous solutions of polyethylene glycol, an optimum of -0.03 MPa led to the highest germination, while no germination was observed at -1.0 MPa. Monochromatic optical filters were utilized to germinate seeds under various wavelengths, of which red (650 nm) and far red (730 nm) led to the highest germination. In addition, seeds that were incubated in the dark had higher germination than those incubated under white light. Incubation in smoke water, which can stimulate germination of phyrophytic species, resulted in a marginal inhibition of germination compared with imbibition with distilled water.}, keywords = {buffel grass, Cenchrus ciliaris, ecophysiology, germination, global change, invasive species, Pennisetum ciliare, zacate buffel}, pubstate = {published}, tppubtype = {article} } Responses of seed germination to air temperature, water potential, light, and smoke were studied in the laboratory for seeds of the invasive bunch grass Pennisetum ciliare (L.) Link (syn. Cenchrus ciliare L.; buffel grass). First introduced to North America during the mid-20th Century for establishing pastures, this African bunch grass has become an invasive species of concern. Across all the experiments conducted, a low germination was observed for P. ciliare fascicles that never exceeded 30% at 21 days after sowing. Optimal day/night air temperatures for germination, controlled with an environmental chamber, were 25/15 and 30/20 ºC, while extreme temperatures of 15/5 and 45/35 ºC inhibited germination. By sowing seeds of P. ciliare under different water potentials, created with aqueous solutions of polyethylene glycol, an optimum of -0.03 MPa led to the highest germination, while no germination was observed at -1.0 MPa. Monochromatic optical filters were utilized to germinate seeds under various wavelengths, of which red (650 nm) and far red (730 nm) led to the highest germination. In addition, seeds that were incubated in the dark had higher germination than those incubated under white light. Incubation in smoke water, which can stimulate germination of phyrophytic species, resulted in a marginal inhibition of germination compared with imbibition with distilled water. |
2012 |
Orozco-Martínez, R; del-Val, E; Lindig-Cisneros, R; Paz, H; Quesada, M; de la Barrera, E Evaluation of three organic fertilizers for growing the widely cultivated crop Cucurbita pepo L. Journal Article African Journal of Agricultural Research, 7 (7), pp. 1087-1097, 2012. Links | BibTeX | Tags: agriculture, agroecology, compost, crop, Cucurbita, Eichornia, invasive species, nitrogen @article{Orozco-Martínez2012, title = {Evaluation of three organic fertilizers for growing the widely cultivated crop Cucurbita pepo L.}, author = {R. Orozco-Martínez and E. del-Val and R. Lindig-Cisneros and H. Paz and M. Quesada and E. de la Barrera }, url = {http://www.academicjournals.org/journal/AJAR/article-abstract/7FF8F8B44821}, year = {2012}, date = {2012-02-19}, journal = {African Journal of Agricultural Research}, volume = {7}, number = {7}, pages = {1087-1097}, keywords = {agriculture, agroecology, compost, crop, Cucurbita, Eichornia, invasive species, nitrogen}, pubstate = {published}, tppubtype = {article} } |
2008 |
de la Barrera, E Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert Journal Article Revista Mexicana de Biodiversidad, 79 , pp. 385-392, 2008. Links | BibTeX | Tags: buffel grass, Cenchrus, cultivation, ENSO, forage, global change, invasive species, Pennisetum, Sonoran Desert, urban sprawl @article{delaBarrera2008, title = {Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert}, author = {E. de la Barrera}, url = {http://www.scielo.org.mx/scielo.php?pid=S1870-34532008000200012&script=sci_arttext}, year = {2008}, date = {2008-01-01}, journal = {Revista Mexicana de Biodiversidad}, volume = {79}, pages = {385-392}, keywords = {buffel grass, Cenchrus, cultivation, ENSO, forage, global change, invasive species, Pennisetum, Sonoran Desert, urban sprawl}, pubstate = {published}, tppubtype = {article} } |
2007 |
de la Barrera, E; Castellanos, A E High temperature effects on gas exchange for the invasive buffel grass (Pennisetum ciliare [L.] Link) Journal Article Weed Biology and Management, 7 , pp. 128-131, 2007. Links | BibTeX | Tags: acclimation, buffel grass, Cenchrus, CO2, cultivation, forage, global change, invasive species, Pennisetum, photosynthesis, shade, Sonoran Desert, temperature, transpiration, water @article{delaBarrera2007, title = {High temperature effects on gas exchange for the invasive buffel grass (Pennisetum ciliare [L.] Link)}, author = {E. de la Barrera and A. E. Castellanos}, url = {http://agro.mx/wp-content/uploads/2016/06/014-De-la-Barrera-Castellanos-2007-WBM.pdf}, year = {2007}, date = {2007-01-01}, journal = {Weed Biology and Management}, volume = {7}, pages = {128-131}, keywords = {acclimation, buffel grass, Cenchrus, CO2, cultivation, forage, global change, invasive species, Pennisetum, photosynthesis, shade, Sonoran Desert, temperature, transpiration, water}, pubstate = {published}, tppubtype = {article} } |
Publicaciones
2021 |
Physiological screening of ruderal weed biomonitors of atmospheric nitrogen deposition Journal Article Forthcoming Botanical Sciences, 99 , Forthcoming. |
2020 |
Germination ecophysiology for three peri-urban ephemeral weeds Journal Article La Granja (Revista de Ciencias de la Vida), 31 , pp. 03, 2020. |
2017 |
PREPRINT: Germination ecophysiology for three peri-urban ephemeral weeds Journal Article PeerJ Preprints, 5 , pp. e2950v1, 2017, ISSN: 2167-9843, (NOT Peer reviewed. This is an early communication for feedback before peer review). |
2016 |
Environmental cues for germination of the invasive bunch grass Pennisetum ciliare (L.) Link Journal Article Acta Physiologiae Plantarum, 38 , pp. 156, 2016. |
2012 |
Evaluation of three organic fertilizers for growing the widely cultivated crop Cucurbita pepo L. Journal Article African Journal of Agricultural Research, 7 (7), pp. 1087-1097, 2012. |
2008 |
Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert Journal Article Revista Mexicana de Biodiversidad, 79 , pp. 385-392, 2008. |
2007 |
High temperature effects on gas exchange for the invasive buffel grass (Pennisetum ciliare [L.] Link) Journal Article Weed Biology and Management, 7 , pp. 128-131, 2007. |